RFL 9300 RFL Electronics Inc.
October 20, 2004 7 - 5 (973) 334-3100
Some other relay functions are less important, or more difficult to test; these functions are outside the scope of
these Laboratory Test Procedures. These functions include the following:
Loss-of-load (backup).
Open conductor detection.
Switch-into-fault (backup).
Desensitizing overreach caused by dc offset.
Channel impairment testing (single-channel).
Dual channel switchover testing.
Bias control, including overhead/underground setting.
Ground delay.
7.4.1 ALARM CONDITIONS AND TRANSMIT ADDRESS ALARM
1. Verify the RFL 9300's local alarm output by removing the phase A controller module.
The red SYS indicator on the 93B SV LED will light. The display will read "ALARM 60 34"
and the beeper will sound. The contacts between rear-panel terminals TB8-1 and TB8-3
will close; this can be verified with an ohmmeter.
2. Push the phase A controller module back into the chassis.
The relay will return to normal operation; the red SYS indicator will go out, the display
will change back to the moving dots, and the beeper will stop.
3. Verify the RFL 9300's local alarm output by removing the phase B controller module.
The red SYS indicator on the 93B SV LED will light. The display will read "ALARM 61 34"
and the beeper will sound. The contacts between rear-panel terminals TB8-1 and TB8-3
will close; this can be verified with an ohmmeter.
4. Push the phase B controller module back into the chassis.
The relay will return to normal operation; the red SYS indicator will go out, the display
will change back to the moving dots, and the beeper will stop.
5. Verify the RFL 9300's local alarm output by removing the phase C controller module.
The red SYS indicator on the 93B SV LED will light. The display will read "ALARM 62 34"
and the beeper will sound. The contacts between rear-panel terminals TB8-1 and TB8-3
will close; this can be verified with an ohmmeter.
6. Push the phase C controller module back into the chassis.
The relay will return to normal operation; the red SYS indicator will go out, the display
will change back to the moving dots, and the beeper will stop.
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